What Is Markdown?
Markdown is a lightweight markup language created by John Gruber in 2004 with the goal of being readable as plain text while also converting cleanly to HTML. Instead of HTML tags like <strong> and <h1>, Markdown uses simple punctuation characters — asterisks for bold, hashtags for headings, hyphens for lists. The design philosophy is that Markdown source should look good even before rendering — unlike HTML, which is virtually unreadable as raw source.
Why Markdown Became Universal
Markdown's simplicity and readability made it the de facto standard for developer documentation, README files, technical writing, and content management. GitHub renders Markdown files automatically in repositories — every project's README.md file is Markdown. Stack Overflow, Reddit, Discord, Slack, Notion, Obsidian, and dozens of other platforms use Markdown or a Markdown variant for text formatting. Static site generators like Jekyll, Hugo, and Gatsby use Markdown for content. The VS Code editor, JetBrains IDEs, and most modern text editors support Markdown preview.
Essential Markdown Syntax
Headings use hashtag symbols — one hashtag for H1, two for H2, up to six for H6. Bold text uses double asterisks or double underscores around the text. Italic uses single asterisks or single underscores. Unordered lists use hyphens, asterisks, or plus signs at the start of each item. Ordered lists use numbers followed by periods. Links use the format [link text](URL). Images use the format . Inline code uses single backticks. Code blocks use triple backticks, optionally followed by a language name for syntax highlighting. Blockquotes use a greater-than symbol at the start of the line. Horizontal rules use three or more hyphens, asterisks, or underscores on their own line.
Markdown Tables
Tables in Markdown use pipe characters to separate columns and hyphens for the header separator row. A basic table has a header row, a separator row with hyphens, and data rows, all aligned with pipe characters. Column alignment can be specified in the separator row — colons on the left for left alignment, on the right for right alignment, and on both sides for center alignment.
Markdown Flavors and Extensions
The original Markdown specification by John Gruber was intentionally minimal. Over time, various Markdown flavors have emerged with extended syntax. GitHub Flavored Markdown (GFM) adds tables, task lists, strikethrough, and automatic link detection. CommonMark is a rigorous standard specification designed to eliminate ambiguities in the original spec. MultiMarkdown adds footnotes, citation support, and metadata. Most modern Markdown implementations support GFM or CommonMark as their base, with additional extensions.
How to Use Our Free Markdown to HTML Converter
Our free Markdown to HTML converter at cookiescursor.com converts any Markdown text to HTML with a live rendered preview. Type or paste your Markdown in the left panel and see both the rendered preview and the raw HTML output in real time. Switch between the rendered preview tab and the HTML source tab. Copy the HTML code with one click. No signup required.
Frequently Asked Questions
Is Markdown the same as HTML?
No. Markdown is a simplified markup language that converts to HTML. Markdown is easier to write and read as plain text, while HTML provides more control over structure and styling.
Can I use HTML inside Markdown?
Yes. Most Markdown parsers allow raw HTML to be embedded in Markdown documents. This is useful for complex formatting that Markdown does not natively support.
What is a .md file?
.md is the file extension for Markdown files. .markdown is also used. Both are identical — just plain text files containing Markdown syntax.
How do I add line breaks in Markdown?
End a line with two or more spaces and then press Enter for a line break within a paragraph. Or leave a blank line between paragraphs for a full paragraph break.
Can Markdown handle footnotes?
Standard Markdown does not support footnotes, but MultiMarkdown and Pandoc Markdown do. GitHub Flavored Markdown also supports footnotes with the [^1] syntax.
What is the best Markdown editor?
For developers, VS Code with a Markdown preview extension is popular. Typora is a popular dedicated Markdown editor. Obsidian is widely used for personal knowledge management with Markdown. Online options include StackEdit and Dillinger.
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